84 lines
3.1 KiB
C++
84 lines
3.1 KiB
C++
//===- MCWin64EH.h - Machine Code Win64 EH support --------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains declarations to support the Win64 Exception Handling
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// scheme in MC.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_MC_MCWIN64EH_H
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#define LLVM_MC_MCWIN64EH_H
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#include "llvm/MC/MCWinEH.h"
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#include "llvm/Support/Win64EH.h"
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namespace llvm {
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class MCStreamer;
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class MCSymbol;
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namespace Win64EH {
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struct Instruction {
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static WinEH::Instruction PushNonVol(MCSymbol *L, unsigned Reg) {
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return WinEH::Instruction(Win64EH::UOP_PushNonVol, L, Reg, -1);
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}
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static WinEH::Instruction Push2(MCSymbol *L, unsigned Reg1, unsigned Reg2) {
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return WinEH::Instruction(Win64EH::UOP_Push2, L, Reg1, Reg2, -1);
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}
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static WinEH::Instruction Alloc(MCSymbol *L, unsigned Size) {
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return WinEH::Instruction(Size > 128 ? UOP_AllocLarge : UOP_AllocSmall, L,
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-1, Size);
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}
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static WinEH::Instruction PushMachFrame(MCSymbol *L, bool Code) {
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return WinEH::Instruction(UOP_PushMachFrame, L, -1, Code ? 1 : 0);
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}
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static WinEH::Instruction SaveNonVol(MCSymbol *L, unsigned Reg,
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unsigned Offset) {
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return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveNonVolBig
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: UOP_SaveNonVol,
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L, Reg, Offset);
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}
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static WinEH::Instruction SaveXMM(MCSymbol *L, unsigned Reg,
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unsigned Offset) {
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return WinEH::Instruction(Offset > 512 * 1024 - 8 ? UOP_SaveXMM128Big
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: UOP_SaveXMM128,
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L, Reg, Offset);
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}
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static WinEH::Instruction SetFPReg(MCSymbol *L, unsigned Reg, unsigned Off) {
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return WinEH::Instruction(UOP_SetFPReg, L, Reg, Off);
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}
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};
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class LLVM_ABI UnwindEmitter : public WinEH::UnwindEmitter {
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public:
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void Emit(MCStreamer &Streamer) const override;
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void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
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bool HandlerData) const override;
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};
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class LLVM_ABI ARMUnwindEmitter : public WinEH::UnwindEmitter {
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public:
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void Emit(MCStreamer &Streamer) const override;
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void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
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bool HandlerData) const override;
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};
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class LLVM_ABI ARM64UnwindEmitter : public WinEH::UnwindEmitter {
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public:
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void Emit(MCStreamer &Streamer) const override;
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void EmitUnwindInfo(MCStreamer &Streamer, WinEH::FrameInfo *FI,
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bool HandlerData) const override;
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};
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/// Encode a single WinEH::Instruction as V3 WOD bytes.
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/// Appends encoded bytes to Out.
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LLVM_ABI void EncodeWOD(const WinEH::Instruction &Inst,
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SmallVectorImpl<uint8_t> &Out);
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} // namespace Win64EH
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} // namespace llvm
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#endif
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